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123141030 = 23517241453
BaseRepresentation
bin1110101011011…
…11101110100110
322120201012201220
413111233232212
5223011003110
620115201210
73023452515
oct725575646
9276635656
10123141030
1163567751
12352a6206
131c68681c
14124d667c
15ac26370
hex756fba6

123141030 has 32 divisors (see below), whose sum is σ = 312924384. Its totient is φ = 30905856.

The previous prime is 123141019. The next prime is 123141089. The reversal of 123141030 is 30141321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120217 + ... + 121236.

It is an arithmetic number, because the mean of its divisors is an integer number (9778887).

Almost surely, 2123141030 is an apocalyptic number.

123141030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123141030 is an abundant number, since it is smaller than the sum of its proper divisors (189783354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123141030 is a wasteful number, since it uses less digits than its factorization.

123141030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241480.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123141030 is about 11096.8928083496. The cubic root of 123141030 is about 497.5089836176.

Adding to 123141030 its reverse (30141321), we get a palindrome (153282351).

The spelling of 123141030 in words is "one hundred twenty-three million, one hundred forty-one thousand, thirty".

Divisors: 1 2 3 5 6 10 15 17 30 34 51 85 102 170 255 510 241453 482906 724359 1207265 1448718 2414530 3621795 4104701 7243590 8209402 12314103 20523505 24628206 41047010 61570515 123141030